Convert THD to M4B Audiobook

THD to M4B Converter converts THD files to M4B audiobook. The software is an ALL-IN-ONE audio converter that supports more than 110 audio and video files.

THD to M4B Converter supports batch conversion and is full compatible with Windows 10/8/7/Vista/XP/2000.

1. Free Download THD to M4B Converter and then install the software by instructions
2. Launch THD to M4B Converter
3. Choose THD Files


Click on "Add Files" button to choose THD files and add them to conversion list.


Choose one or more THD files you want to convert and then click Open.


4. Choose "to M4B"




5. Convert THD to M4B Audiobook


Click on button "Convert" to convert THD files to M4B audiobook.


Alternatively, you could click "Convert to One" to convert and combine/join/merge multiple THD files to one M4B audiobook.


The software is converting THD files to M4B audiobook.


6. Play and Browse M4B Audiobook


Right-click converted M4B audiobook and choose "Play Destination" to play the outputted M4B audiobook, choose "Browse Destination Folder" to open Windows Explorer to browse the M4B audiobook.


7. Done

Free Download THD to M4B Converter

What is THD?
Dolby TrueHD, it is an advanced lossless multi-channel audio codec developed by Dolby Laboratories which is intended primarily for high-definition home-entertainment equipment such as Blu-ray Disc and HD DVD. It is the successor to the AC-3 Dolby Digital surround sound codec which was used as the audio standard for DVD discs. In this application, Dolby TrueHD competes with DTS-HD Master Audio, another lossless codec from Digital Theater System.

Dolby TrueHD uses Meridian Lossless Packing (MLP) as its mathematical basis for compressing audio samples. MLP was used on the earlier DVD-Audio format, but details of Dolby TrueHD and DVD-Audio differ substantially. A Dolby TrueHD bitstream can carry up to 14 discrete sound channels. Sample depths up to 24 bits/sample and audio sample rates up to 192 kHz are supported. Like the more common legacy codec Dolby Digital, Dolby TrueHD bitstreams carry program metadata. Metadata is separate from the coding format and compressed audio samples, but stores relevant information about the audio waveform. For example, dialog normalization and Dynamic range compression are controlled by metadata embedded in the TrueHD bitstream.

In the Blu-ray specification, Dolby TrueHD is an optional codec. Dolby TrueHD audiotracks may carry up to 24 bit audio in up to 8 discrete audio channels at 96 kHz or up to 2 channels at 192 kHz. The maximum encoded bitrate is 18 Mbit/s (the same as the uncompressed rate). Since TrueHD is an optional codec, a separate (primary) AC-3 audiotrack must be present on Blu-ray discs that contain a TrueHD track.

What is M4B?
Audiobook file based on the MPEG-4 container format; typically compressed with .AAC encoding; nearly identical to a .M4A file, but denoted as an audiobook and can be "bookmarked" by supporting audio players such as iTunes and iPod.

The M4B extension is used by audiobooks downloaded from the Apple iTunes store; these audiobooks may be copy-protected using Apple's FairPlay DRM, which means they can only be played on authorized computers or iPods.

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